Dust removal and collection equipment for blast furnace

Abstract

The utility model belongs to the technical field of blast furnace dust removal and collection equipment, and particularly relates to blast furnace dust removal and collection equipment which comprises a bottom plate, a dust remover is mounted at one end of the bottom plate, and a filter plate is mounted in the dust remover; a screw rod is rotatably arranged at one end of the dust remover in a penetrating manner, and a screw rod-screw nut pair is connected with a scraper plate; the scraping end of the scraping plate is attached to the surface of the filter plate; a first box body is arranged at the middle end of the bottom plate, and the interior of the top end of the first box body is connected with a dust remover through a smoke inlet pipe; cooling liquid is poured into the first box body, so that the purpose of cooling a high-temperature part in flue gas treated by the dust remover is achieved, the temperature of the flue gas is reduced, high-temperature pressure borne by a filter plate at the front end of the filter plate is reduced, meanwhile, a lead screw is driven by a servo motor to rotate, and a scraper is driven to move on the surface of the filter plate; impurities and particles attached to the filter plate are removed, so that smoothness of the filter plate is kept, and normal flow and dust removal efficiency of the dust remover are kept.

Description

Technical Field

[0001] This utility model belongs to the technical field of blast furnace dust collection equipment, specifically a blast furnace dust collection device. Background Technology

[0002] A blast furnace is a smelting furnace used to refine pig iron from iron ore. It is a vertical cylindrical furnace with its inner wall lined with refractory materials. It is the main equipment for smelting pig iron. Iron ore must be smelted in a blast furnace to obtain pig iron blocks for various purposes, or molten iron for steelmaking, and it can also be used to produce lead, copper and other metals.

[0003] Blast furnace dust collection equipment is mainly used to treat the smoke and dust generated during blast furnace production. By intercepting and collecting particulate matter in the dust-laden gas, it reduces the emission of smoke and dust, thereby purifying the air and protecting the environment.

[0004] When treating flue gas, the high temperature or impurities in the flue gas can easily damage or clog the filter screen at the front end of the dust collector, causing deformation and damage to the filter screen and blockage of the filter screen pores, thereby affecting the normal flow rate of the dust collector. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art and solve at least one of the technical problems mentioned in the background art, this utility model proposes a blast furnace dust collection device.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: A blast furnace dust collection device according to this utility model includes a base plate, a dust collector is installed at one end of the base plate, and a filter plate is installed inside the dust collector; a lead screw is rotatably passed through one end of the dust collector, and a scraper is connected to the lead screw and nut pair; the scraping end of the scraper is in contact with the surface of the filter plate; a collection box is installed at the end of the dust collector where the filter plate is located; a first box is provided in the middle of the base plate, and the top of the first box is connected to the dust collector through a flue gas inlet pipe; a first stirring rod is rotatably passed through the middle of the top of the first box, and one end of the first stirring rod is connected to one end of the lead screw through a pulley assembly; a servo motor is installed at one end of the lead screw.

[0007] Preferably, the bottom end of the scraper is connected to a trapezoidal baffle, and the trapezoidal baffle and the lead screw are slidably connected; a guide plate is installed on the trapezoidal baffle, and the guide plate is triangularly arranged; a limit frame is installed at the bottom inside the dust collector, and a trapezoidal groove that fits the shape of the trapezoidal baffle is opened inside the limit frame.

[0008] Preferably, the outer wall of the collection box is provided with a retaining plate on both sides; the outer wall of the dust collector is provided with a spring column on both sides, and the elastic end of the spring column is connected to a retaining plate; the retaining plate and the retaining plate are interlocked; and a sealing gasket is provided on the dust collector.

[0009] Preferably, a second housing is installed at one end of the base plate; a smoke inlet channel is provided at one end of the second housing; a smoke inlet pipe is also provided inside the second housing, the smoke inlet pipe located inside the second housing is spirally arranged, and one end of the smoke inlet pipe extends through the second housing and into the interior of the first housing; one end of the smoke inlet pipe is connected to the smoke inlet channel.

[0010] Preferably, multiple sets of second stirring rods are rotatably passed through the edge of the first housing; a first gear is installed at one end of the first stirring rod, and a second gear is installed at one end of the second stirring rod; the first gear and the second gear are meshed together.

[0011] Preferably, both the first and second boxes are provided with observation windows on one side.

[0012] Preferably, the bottom of the base plate is provided with a rubber pad.

[0013] The beneficial effects of this utility model are:

[0014] This invention provides a blast furnace dust collection device. By injecting cooling liquid into the first chamber, the high-temperature portion of the flue gas treated by the dust collector is cooled, reducing the flue gas temperature and the high-temperature pressure on the filter plates. Simultaneously, a servo motor drives a lead screw to rotate, causing scrapers to move across the filter plate surface to remove impurities and particles adhering to the filter plates, thus maintaining the filter plates' unobstructed flow and ensuring the normal flow rate and dust removal efficiency of the dust collector. Impurities scraped off are collected in a collection box for subsequent centralized processing. The first chamber also contains flotation reagents to float secondary carbon from fine dust particles in the blast furnace flue gas, reducing the amount of dust and impurities intercepted on the filter plate surface. Furthermore, a pulley system simultaneously drives a first stirring rod to rotate inside the first chamber during filter plate cleaning, promoting the dissolution and mixing of the reagents and ensuring thorough mixing of the flue gas with the cooling liquid, further improving the flue gas cooling effect.

[0015] This utility model provides a blast furnace dust collection device. By controlling a servo motor to drive the scraper to move, the trapezoidal baffle enters the trapezoidal groove. At this time, one end of the collection box can be sealed to reduce dust from floating out of the collection box and re-attaching to the filter plate surface. The triangular arrangement of the guide plate allows the device to slide down its inclined surface when it falls on the surface, thereby reducing dust accumulation on the top of the trapezoidal baffle. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0017] Figure 1 This is a perspective view of the present invention;

[0018] Figure 2 This is a partial cross-sectional view of the dust collector in this utility model;

[0019] Figure 3 This is a perspective view of the guide plate in this utility model;

[0020] Figure 4 This is a cross-sectional view collected in this utility model.

[0021] Legend:

[0022] 1. Base plate; 2. Dust collector; 3. Filter plate; 4. Lead screw; 5. Scraper; 6. Collection box; 7. First housing; 8. First stirring rod; 9. Pulley assembly; 10. Trapezoidal baffle; 11. Limiting frame; 12. Trapezoidal groove; 13. Guide plate; 14. Clamping plate; 15. Spring column; 16. Slot plate; 17. Sealing gasket; 18. Second housing; 19. Smoke inlet channel; 20. Smoke inlet pipe; 21. Second stirring rod; 22. First gear; 23. Second gear; 24. Observation window. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0024] Specific implementation examples are given below.

[0025] Please see Figures 1-4 This utility model provides a blast furnace dust collection device, including a base plate 1. A dust collector 2 is installed at one end of the base plate 1, and a filter plate 3 is installed inside the dust collector 2. A lead screw 4 is rotatably connected to one end of the dust collector 2, and a scraper 5 is connected to the lead screw 4 and its screw nut pair. The scraping end of the scraper 5 is in contact with the surface of the filter plate 3. A collection box 6 is installed at the end of the dust collector 2 where the filter plate 3 is located. A first box 7 is provided in the middle of the base plate 1, and the top of the first box 7 is connected to the dust collector 2 through a flue gas inlet pipe 20. A first stirring rod 8 is rotatably connected to the middle of the top of the first box 7, and one end of the first stirring rod 8 is connected to one end of the lead screw 4 through a pulley group 9. A servo motor is installed at one end of the lead screw 4.

[0026] During operation, cooling liquid is injected into the first chamber 7 to cool the high-temperature portion of the flue gas treated by the dust collector 2, thereby reducing the temperature of the flue gas and the high-temperature pressure on the filter plate 3 at the front end of the filter plate 3. At the same time, the servo motor drives the lead screw 4 to rotate, causing the scraper 5 to move on the surface of the filter plate 3 to remove impurities and particles attached to the filter plate 3, thus maintaining the unobstructed flow of the filter plate 3 and the normal flow rate and dust removal efficiency of the dust collector 2. The scraped impurities are collected in the collection box 6 for subsequent centralized processing. Meanwhile, flotation reagents are added to the first chamber 7 to achieve the flotation effect on the secondary carbon of fine dust ash in the blast furnace flue gas, thereby reducing the amount of dust and impurities intercepted on the surface of the filter plate 3. The pulley group 9 can drive the first stirring rod 8 to rotate inside the first chamber 7 while cleaning the filter plate 3, promoting the dissolution and mixing of the reagents and allowing the flue gas to be fully mixed with the cooling liquid, thereby further improving the cooling effect of the flue gas.

[0027] Please see Figures 1-4 The scraper 5 is connected to a trapezoidal baffle 10 at its bottom end, and the trapezoidal baffle 10 is slidably connected to the lead screw 4. A guide plate 13 is installed on the trapezoidal baffle 10, and the guide plate 13 is triangularly arranged. A limit frame 11 is installed at the bottom of the dust collector 2, and a trapezoidal groove 12 that fits the shape of the trapezoidal baffle 10 is opened inside the limit frame 11. During operation, the scraper 5 is moved by controlling the servo motor, so that the trapezoidal baffle 10 enters the trapezoidal groove 12. At this time, one end of the collection box 6 can be sealed to reduce dust from floating out of the collection box 6 and adhering to the surface of the filter plate 3 again. The triangular arrangement of the guide plate 13 allows the device to slide down its inclined surface when it falls on its surface, thereby reducing dust accumulation on the top of the trapezoidal baffle 10.

[0028] Please see Figures 1-4 The collection box 6 has clamping plates 14 on both sides of its outer wall; the dust collector 2 has spring columns 15 on both sides of its outer wall, and the elastic end of the spring column 15 is connected to a slot plate 16; the slot plate 16 and the clamping plate 14 are interlocked; the dust collector 2 is provided with a sealing gasket 17; during operation, by pushing the telescopic end of the spring column 15, the slot plate 16 is disengaged from the clamping plate 14, and the collection box 6 can be quickly removed from the dust collector 2, so as to facilitate the subsequent centralized treatment of the dust collected inside the collection box 6. The sealing gasket 17 can improve the sealing effect of the collection box 6 and the dust collector 2 and reduce the leakage of flue gas from the connection between the two.

[0029] Please see Figures 1-4The base plate 1 has a second housing 18 installed at one end; the second housing 18 has a smoke inlet channel 19 at one end; the second housing 18 also has a smoke inlet pipe 20 inside, the smoke inlet pipe 20 inside the second housing 18 is spirally arranged, and one end of the smoke inlet pipe 20 extends through the second housing 18 to the inside of the first housing 7; one end of the smoke inlet pipe 20 is connected to the smoke inlet channel 19; during operation, tap water is poured into the second housing 18, and when the flue gas flows in the smoke inlet pipe 20, the tap water inside is heated to utilize the waste heat of the flue gas. At the same time, the spiral arrangement can increase the residence time of the flue gas inside the second housing 18, further improve the waste heat utilization rate, and reduce the heat of the flue gas, further reducing the high temperature pressure borne by the filter plate 3.

[0030] Please see Figures 1-4 Multiple sets of second stirring rods 21 are rotatably inserted around the edge of the first housing 7; a first gear 22 is installed at one end of the first stirring rod 8, and a second gear 23 is installed at one end of the second stirring rod 21; the first gear 22 and the second gear 23 are meshed; during operation, the rotation of the first stirring rod 8 drives the first gear 22 to rotate, which in turn meshes and drives multiple sets of second gears 23 to rotate simultaneously, thereby achieving the effect of driving multiple sets of second stirring rods 21 to rotate simultaneously, thus performing more complex agitation on the liquid inside the first housing 7 and improving the stirring effect.

[0031] Please see Figures 1-4 The first box 7 and the second box 18 are each provided with an observation window 24 on one side; during operation, the observation window 24 allows personnel to easily check the usage status inside the two boxes at any time.

[0032] Please see Figures 1-4 The bottom of the base plate 1 is provided with a rubber pad; during operation, the rubber pad can increase the friction between the base plate 1 and the ground, thereby improving the stability of the device.

[0033] Working principle: By injecting cooling liquid into the first chamber 7, the high-temperature portion of the flue gas treated by the dust collector 2 is cooled down, thereby reducing the temperature of the flue gas and decreasing the high-temperature pressure on the filter plate 3 at its front end. Simultaneously, a servo motor drives the lead screw 4 to rotate, causing the scraper 5 to move across the surface of the filter plate 3, removing impurities and particles adhering to the filter plate 3. This maintains the unobstructed flow of the filter plate 3 and ensures the normal flow rate and dust removal efficiency of the dust collector 2. The scraped impurities are collected in the collection box 6 for subsequent centralized processing. Additionally, flotation reagents are added to the first chamber 7 to remove impurities and particles from the blast furnace flue gas. The secondary carbon from the fine dust particles is floated to reduce the amount of dust and impurities intercepted on the surface of the subsequent filter plate 3. The pulley assembly 9 simultaneously drives the first stirring rod 8 to rotate inside the first housing 7 while cleaning the filter plate 3, promoting the dissolution and mixing of the reagents and ensuring thorough mixing of the flue gas with the cooling liquid, further improving the flue gas cooling effect. By controlling the servo motor to move the scraper 5, the trapezoidal baffle 10 enters the trapezoidal groove 12, at which point one end of the collection box 6 can be sealed, reducing dust from floating out of the collection box 6 and re-attaching to the surface of the filter plate 3. The triangular arrangement of the guide plate 13... This design allows the device to slide off its inclined surface when it lands on the trapezoidal baffle 10, reducing dust accumulation on the top of the baffle 10. By pushing the telescopic end of the spring column 15, the slot plate 16 disengages from the slot plate 14, allowing the collection box 6 to be quickly removed from the dust collector 2 for subsequent centralized processing of the dust collected inside. The sealing gasket 17 improves the sealing effect between the collection box 6 and the dust collector 2, reducing the leakage of flue gas from their connection point. By filling the second housing 18 with tap water, the water is heated as the flue gas flows through the inlet pipe 20, utilizing the waste heat of the flue gas. Simultaneously, its spiral... The configuration can increase the residence time of flue gas inside the second chamber 18, further improve the waste heat utilization rate, reduce the heat of the flue gas, and further reduce the high temperature pressure borne by the filter plate 3; the rotation of the first stirring rod 8 drives the first gear 22 to rotate, which in turn meshes and drives multiple sets of second gears 23 to rotate simultaneously, so as to achieve the effect of driving multiple sets of second stirring rods 21 to rotate simultaneously, so as to perform more complex agitation on the liquid inside the first chamber 7 and improve the stirring effect; the observation window 24 allows personnel to easily check the usage status inside the two chambers at any time; the rubber pad can increase the friction between the bottom plate 1 and the ground to improve the stability of the device.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A blast furnace dust collection device, comprising a bottom plate (1), wherein a dust collector (2) is installed at one end of the bottom plate (1), and a filter plate (3) is installed inside the dust collector (2); characterized in that: The dust collector (2) has a lead screw (4) rotatably passing through one end, and a scraper (5) is connected to the lead screw (4) and nut pair; the scraping end of the scraper (5) is in contact with the surface of the filter plate (3); a collection box (6) is installed at one end of the dust collector (2) where the filter plate (3) is located; a first box (7) is provided in the middle of the bottom plate (1), and the top of the first box (7) is connected to the dust collector (2) through a smoke inlet pipe (20); a first stirring rod (8) is rotatably passing through the middle of the top of the first box (7), and one end of the first stirring rod (8) is connected to one end of the lead screw (4) through a pulley group (9); a servo motor is installed at one end of the lead screw (4).

2. The blast furnace dust collection device as described in claim 1, characterized in that: The scraper (5) is connected to a trapezoidal baffle (10) at its bottom end, and the trapezoidal baffle (10) and the lead screw (4) are slidably connected; a guide plate (13) is installed on the trapezoidal baffle (10), and the guide plate (13) is triangular; a limit frame (11) is installed at the bottom inside the dust collector (2), and a trapezoidal groove (12) that fits the shape of the trapezoidal baffle (10) is opened inside the limit frame (11).

3. The blast furnace dust collection device as described in claim 1, characterized in that: The collection box (6) has a card plate (14) on both sides of its outer wall; the dust collector (2) has a spring column (15) installed on both sides of its outer wall, and the elastic end of the spring column (15) is connected to a card slot plate (16); the card slot plate (16) and the card plate (14) are connected by a snap-fit; the dust collector (2) is provided with a sealing gasket (17).

4. The blast furnace dust collection device as described in claim 1, characterized in that: The base plate (1) is equipped with a second box (18) at one end; the second box (18) is provided with a smoke inlet channel (19) at one end; the second box (18) is also provided with a smoke inlet pipe (20) inside, the smoke inlet pipe (20) inside the second box (18) is spirally arranged, and one end of the smoke inlet pipe (20) extends through the second box (18) to the inside of the first box (7); one end of the smoke inlet pipe (20) is connected to the smoke inlet channel (19).

5. The blast furnace dust collection device as described in claim 1, characterized in that: The first housing (7) has multiple sets of second stirring rods (21) that rotate around its edge; one end of the first stirring rod (8) is equipped with a first gear (22), and one end of the second stirring rod (21) is equipped with a second gear (23); the first gear (22) and the second gear (23) are meshed together.

6. The blast furnace dust collection device as described in claim 4, characterized in that: Both the first box (7) and the second box (18) are provided with an observation window (24) on one side.

7. The blast furnace dust collection device as described in claim 1, characterized in that: The bottom of the base plate (1) is provided with a rubber pad.

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